US Patent 11055923 System and method for head mounted device input

According to one implementation, a head mounted display (HMD) device comprises a motion detector, a display, and a processor coupled to the motion detector and the display. A memory is also coupled to the processor, wherein the memory stores executable instructions that cause the processor to define an available range for a motion and output a graphic user interface for the available range on the display. An input based upon a motion of the HMD device detected by the inertial motion unit, within the available range is received. One of the HMD device or an external device may then be controlled in response to the input.